AT_BANNER([reconnect library]) m4_define([__RECONNECT_CHECK], [AT_SETUP([$1]) $2 AT_KEYWORDS([reconnect]) AT_DATA([input], [$3]) AT_CHECK([$4], [0], [$5]) AT_CLEANUP]) m4_define([RECONNECT_CHECK], [__RECONNECT_CHECK( [$1 - C], [], [$2], [ovstest test-reconnect < input], [$3]) __RECONNECT_CHECK( [$1 - Python2], [AT_SKIP_IF([test $HAVE_PYTHON = no])], [$2], [$PYTHON $srcdir/test-reconnect.py < input], [$3]) __RECONNECT_CHECK( [$1 - Python3], [AT_SKIP_IF([test $HAVE_PYTHON3 = no])], [$2], [$PYTHON3 $srcdir/test-reconnect.py < input], [$3])]) ###################################################################### RECONNECT_CHECK([nothing happens if not enabled], [run timeout ], [### t=1000 ### run timeout no timeout ]) ###################################################################### RECONNECT_CHECK([quick connect, idle disconnect], [enable # Connection succeeds. run connected # Send inactivity probe. timeout run # Idle timeout kills connection. timeout run disconnected ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # Connection succeeds. run should connect connected in ACTIVE for 0 ms (0 ms backoff) created 1000, last activity 1000, last connected 1000 1 successful connections out of 1 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total # Send inactivity probe. timeout advance 5000 ms ### t=6000 ### in ACTIVE for 5000 ms (0 ms backoff) run should send probe in IDLE for 0 ms (0 ms backoff) # Idle timeout kills connection. timeout advance 5000 ms ### t=11000 ### in IDLE for 5000 ms (0 ms backoff) run should disconnect disconnected in BACKOFF for 0 ms (1000 ms backoff) 1 successful connections out of 1 attempts, seqno 2 disconnected disconnected at 11000 ms (0 ms ago) ]) ###################################################################### RECONNECT_CHECK([slow connect, idle disconnect], [enable # Start connecting. run connecting # Connect after 500 ms. advance 500 run connected # Send inactivity probe. timeout run # Idle timeout kills connection. timeout run disconnected ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # Start connecting. run should connect connecting in CONNECTING for 0 ms (0 ms backoff) # Connect after 500 ms. advance 500 ### t=1500 ### in CONNECTING for 500 ms (0 ms backoff) run connected in ACTIVE for 0 ms (0 ms backoff) created 1000, last activity 1000, last connected 1500 1 successful connections out of 1 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total # Send inactivity probe. timeout advance 5000 ms ### t=6500 ### in ACTIVE for 5000 ms (0 ms backoff) run should send probe in IDLE for 0 ms (0 ms backoff) # Idle timeout kills connection. timeout advance 5000 ms ### t=11500 ### in IDLE for 5000 ms (0 ms backoff) run should disconnect disconnected in BACKOFF for 0 ms (1000 ms backoff) 1 successful connections out of 1 attempts, seqno 2 disconnected disconnected at 11500 ms (0 ms ago) ]) ###################################################################### RECONNECT_CHECK([connect backs off], [enable # First connection attempt fails after 1000 ms. run connecting run timeout run connect-failed # Back off for 1000 ms. timeout run # Second connection attempt fails after 1000 ms. connecting timeout run connect-failed # Back off for 2000 ms. timeout run # Third connection attempt fails after 2000 ms. connecting timeout run connect-failed # Back off for 4000 ms. timeout run # Third connection attempt fails after 4000 ms. connecting timeout run connect-failed # Back off for 8000 ms. timeout run # Third connection attempt fails after 8000 ms. connecting timeout run connect-failed # Back off for 8000 ms. timeout run # Fourth connection attempt fails after 8000 ms. connecting timeout run connect-failed ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # First connection attempt fails after 1000 ms. run should connect connecting in CONNECTING for 0 ms (0 ms backoff) run timeout advance 1000 ms ### t=2000 ### in CONNECTING for 1000 ms (0 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (1000 ms backoff) 0 successful connections out of 1 attempts, seqno 0 # Back off for 1000 ms. timeout advance 1000 ms ### t=3000 ### in BACKOFF for 1000 ms (1000 ms backoff) run should connect # Second connection attempt fails after 1000 ms. connecting in CONNECTING for 0 ms (1000 ms backoff) timeout advance 1000 ms ### t=4000 ### in CONNECTING for 1000 ms (1000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (2000 ms backoff) 0 successful connections out of 2 attempts, seqno 0 # Back off for 2000 ms. timeout advance 2000 ms ### t=6000 ### in BACKOFF for 2000 ms (2000 ms backoff) run should connect # Third connection attempt fails after 2000 ms. connecting in CONNECTING for 0 ms (2000 ms backoff) timeout advance 2000 ms ### t=8000 ### in CONNECTING for 2000 ms (2000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (4000 ms backoff) 0 successful connections out of 3 attempts, seqno 0 # Back off for 4000 ms. timeout advance 4000 ms ### t=12000 ### in BACKOFF for 4000 ms (4000 ms backoff) run should connect # Third connection attempt fails after 4000 ms. connecting in CONNECTING for 0 ms (4000 ms backoff) timeout advance 4000 ms ### t=16000 ### in CONNECTING for 4000 ms (4000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (8000 ms backoff) 0 successful connections out of 4 attempts, seqno 0 # Back off for 8000 ms. timeout advance 8000 ms ### t=24000 ### in BACKOFF for 8000 ms (8000 ms backoff) run should connect # Third connection attempt fails after 8000 ms. connecting in CONNECTING for 0 ms (8000 ms backoff) timeout advance 8000 ms ### t=32000 ### in CONNECTING for 8000 ms (8000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (8000 ms backoff) 0 successful connections out of 5 attempts, seqno 0 # Back off for 8000 ms. timeout advance 8000 ms ### t=40000 ### in BACKOFF for 8000 ms (8000 ms backoff) run should connect # Fourth connection attempt fails after 8000 ms. connecting in CONNECTING for 0 ms (8000 ms backoff) timeout advance 8000 ms ### t=48000 ### in CONNECTING for 8000 ms (8000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (8000 ms backoff) 0 successful connections out of 6 attempts, seqno 0 ]) ###################################################################### RECONNECT_CHECK([connections with no data preserve backoff], [enable # First connect, then idle timeout kills connection. run connected timeout run timeout run disconnected # Back off for 1000 ms. timeout run # Second connect, then idle timeout kills connection. run connected timeout run timeout run disconnected # Back off for 2000 ms. timeout run # Third connect, then idle timeout kills connection. run connected timeout run timeout run disconnected # Back off for 4000 ms. timeout ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # First connect, then idle timeout kills connection. run should connect connected in ACTIVE for 0 ms (0 ms backoff) created 1000, last activity 1000, last connected 1000 1 successful connections out of 1 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total timeout advance 5000 ms ### t=6000 ### in ACTIVE for 5000 ms (0 ms backoff) run should send probe in IDLE for 0 ms (0 ms backoff) timeout advance 5000 ms ### t=11000 ### in IDLE for 5000 ms (0 ms backoff) run should disconnect disconnected in BACKOFF for 0 ms (1000 ms backoff) 1 successful connections out of 1 attempts, seqno 2 disconnected disconnected at 11000 ms (0 ms ago) # Back off for 1000 ms. timeout advance 1000 ms ### t=12000 ### in BACKOFF for 1000 ms (1000 ms backoff) last connected 11000 ms ago, connected 10000 ms total run should connect # Second connect, then idle timeout kills connection. run should connect connected in ACTIVE for 0 ms (1000 ms backoff) created 1000, last activity 1000, last connected 12000 2 successful connections out of 2 attempts, seqno 3 connected last connected 0 ms ago, connected 10000 ms total timeout advance 5000 ms ### t=17000 ### in ACTIVE for 5000 ms (1000 ms backoff) run should send probe in IDLE for 0 ms (1000 ms backoff) timeout advance 5000 ms ### t=22000 ### in IDLE for 5000 ms (1000 ms backoff) run should disconnect disconnected in BACKOFF for 0 ms (2000 ms backoff) 2 successful connections out of 2 attempts, seqno 4 disconnected disconnected at 22000 ms (0 ms ago) # Back off for 2000 ms. timeout advance 2000 ms ### t=24000 ### in BACKOFF for 2000 ms (2000 ms backoff) last connected 12000 ms ago, connected 20000 ms total run should connect # Third connect, then idle timeout kills connection. run should connect connected in ACTIVE for 0 ms (2000 ms backoff) created 1000, last activity 1000, last connected 24000 3 successful connections out of 3 attempts, seqno 5 connected last connected 0 ms ago, connected 20000 ms total timeout advance 5000 ms ### t=29000 ### in ACTIVE for 5000 ms (2000 ms backoff) run should send probe in IDLE for 0 ms (2000 ms backoff) timeout advance 5000 ms ### t=34000 ### in IDLE for 5000 ms (2000 ms backoff) run should disconnect disconnected in BACKOFF for 0 ms (4000 ms backoff) 3 successful connections out of 3 attempts, seqno 6 disconnected disconnected at 34000 ms (0 ms ago) # Back off for 4000 ms. timeout advance 4000 ms ### t=38000 ### in BACKOFF for 4000 ms (4000 ms backoff) last connected 14000 ms ago, connected 30000 ms total ]) ###################################################################### RECONNECT_CHECK([brief connection preserves backoff], [enable # First connection attempt fails after 1000 ms. run connecting run timeout run connect-failed # Back off for 1000 ms. timeout run # Second connection attempt fails after 1000 ms. connecting timeout run connect-failed # Back off for 2000 ms. timeout run # Third connection attempt succeeds after 500 ms. connecting advance 500 run connected # Connection drops after another 250 ms. advance 250 disconnected run # Back off for 4000 ms. timeout run ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # First connection attempt fails after 1000 ms. run should connect connecting in CONNECTING for 0 ms (0 ms backoff) run timeout advance 1000 ms ### t=2000 ### in CONNECTING for 1000 ms (0 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (1000 ms backoff) 0 successful connections out of 1 attempts, seqno 0 # Back off for 1000 ms. timeout advance 1000 ms ### t=3000 ### in BACKOFF for 1000 ms (1000 ms backoff) run should connect # Second connection attempt fails after 1000 ms. connecting in CONNECTING for 0 ms (1000 ms backoff) timeout advance 1000 ms ### t=4000 ### in CONNECTING for 1000 ms (1000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (2000 ms backoff) 0 successful connections out of 2 attempts, seqno 0 # Back off for 2000 ms. timeout advance 2000 ms ### t=6000 ### in BACKOFF for 2000 ms (2000 ms backoff) run should connect # Third connection attempt succeeds after 500 ms. connecting in CONNECTING for 0 ms (2000 ms backoff) advance 500 ### t=6500 ### in CONNECTING for 500 ms (2000 ms backoff) run connected in ACTIVE for 0 ms (2000 ms backoff) created 1000, last activity 1000, last connected 6500 1 successful connections out of 3 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total # Connection drops after another 250 ms. advance 250 ### t=6750 ### in ACTIVE for 250 ms (2000 ms backoff) disconnected in BACKOFF for 0 ms (4000 ms backoff) 1 successful connections out of 3 attempts, seqno 2 disconnected disconnected at 6750 ms (0 ms ago) run # Back off for 4000 ms. timeout advance 4000 ms ### t=10750 ### in BACKOFF for 4000 ms (4000 ms backoff) last connected 4250 ms ago, connected 250 ms total run should connect ]) ###################################################################### RECONNECT_CHECK([brief connection with data preserves backoff], [enable # First connection attempt fails after 1000 ms. run connecting run timeout run connect-failed # Back off for 1000 ms. timeout run # Second connection attempt fails after 1000 ms. connecting timeout run connect-failed # Back off for 2000 ms. timeout run # Third connection attempt succeeds after 500 ms. connecting advance 500 run connected # Connection receives 3 chunks of data spaced 250 ms apart. advance 250 run activity advance 250 run activity advance 250 run activity # Connection drops. disconnected run # Back off for 4000 ms. timeout run ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # First connection attempt fails after 1000 ms. run should connect connecting in CONNECTING for 0 ms (0 ms backoff) run timeout advance 1000 ms ### t=2000 ### in CONNECTING for 1000 ms (0 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (1000 ms backoff) 0 successful connections out of 1 attempts, seqno 0 # Back off for 1000 ms. timeout advance 1000 ms ### t=3000 ### in BACKOFF for 1000 ms (1000 ms backoff) run should connect # Second connection attempt fails after 1000 ms. connecting in CONNECTING for 0 ms (1000 ms backoff) timeout advance 1000 ms ### t=4000 ### in CONNECTING for 1000 ms (1000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (2000 ms backoff) 0 successful connections out of 2 attempts, seqno 0 # Back off for 2000 ms. timeout advance 2000 ms ### t=6000 ### in BACKOFF for 2000 ms (2000 ms backoff) run should connect # Third connection attempt succeeds after 500 ms. connecting in CONNECTING for 0 ms (2000 ms backoff) advance 500 ### t=6500 ### in CONNECTING for 500 ms (2000 ms backoff) run connected in ACTIVE for 0 ms (2000 ms backoff) created 1000, last activity 1000, last connected 6500 1 successful connections out of 3 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total # Connection receives 3 chunks of data spaced 250 ms apart. advance 250 ### t=6750 ### in ACTIVE for 250 ms (2000 ms backoff) run activity created 1000, last activity 6750, last connected 6500 advance 250 ### t=7000 ### in ACTIVE for 500 ms (2000 ms backoff) run activity created 1000, last activity 7000, last connected 6500 advance 250 ### t=7250 ### in ACTIVE for 750 ms (2000 ms backoff) run activity created 1000, last activity 7250, last connected 6500 # Connection drops. disconnected in BACKOFF for 0 ms (4000 ms backoff) 1 successful connections out of 3 attempts, seqno 2 disconnected disconnected at 7250 ms (0 ms ago) run # Back off for 4000 ms. timeout advance 4000 ms ### t=11250 ### in BACKOFF for 4000 ms (4000 ms backoff) last connected 4750 ms ago, connected 750 ms total run should connect ]) ###################################################################### RECONNECT_CHECK([long connection resets backoff], [enable # First connection attempt fails after 1000 ms. run connecting run timeout run connect-failed # Back off for 1000 ms. timeout run # Second connection attempt fails after 1000 ms. connecting timeout run connect-failed # Back off for 2000 ms. timeout run # Third connection attempt succeeds after 500 ms. connecting advance 500 run connected # Connection receives 3 chunks of data spaced 2000 ms apart. advance 2000 run activity advance 2000 run activity advance 2000 run activity # Connection drops. disconnected run # Back off for 1000 ms. timeout run ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # First connection attempt fails after 1000 ms. run should connect connecting in CONNECTING for 0 ms (0 ms backoff) run timeout advance 1000 ms ### t=2000 ### in CONNECTING for 1000 ms (0 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (1000 ms backoff) 0 successful connections out of 1 attempts, seqno 0 # Back off for 1000 ms. timeout advance 1000 ms ### t=3000 ### in BACKOFF for 1000 ms (1000 ms backoff) run should connect # Second connection attempt fails after 1000 ms. connecting in CONNECTING for 0 ms (1000 ms backoff) timeout advance 1000 ms ### t=4000 ### in CONNECTING for 1000 ms (1000 ms backoff) run should disconnect connect-failed in BACKOFF for 0 ms (2000 ms backoff) 0 successful connections out of 2 attempts, seqno 0 # Back off for 2000 ms. timeout advance 2000 ms ### t=6000 ### in BACKOFF for 2000 ms (2000 ms backoff) run should connect # Third connection attempt succeeds after 500 ms. connecting in CONNECTING for 0 ms (2000 ms backoff) advance 500 ### t=6500 ### in CONNECTING for 500 ms (2000 ms backoff) run connected in ACTIVE for 0 ms (2000 ms backoff) created 1000, last activity 1000, last connected 6500 1 successful connections out of 3 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total # Connection receives 3 chunks of data spaced 2000 ms apart. advance 2000 ### t=8500 ### in ACTIVE for 2000 ms (2000 ms backoff) run activity created 1000, last activity 8500, last connected 6500 advance 2000 ### t=10500 ### in ACTIVE for 4000 ms (2000 ms backoff) run activity created 1000, last activity 10500, last connected 6500 advance 2000 ### t=12500 ### in ACTIVE for 6000 ms (2000 ms backoff) run activity created 1000, last activity 12500, last connected 6500 # Connection drops. disconnected in BACKOFF for 0 ms (1000 ms backoff) 1 successful connections out of 3 attempts, seqno 2 disconnected disconnected at 12500 ms (0 ms ago) run # Back off for 1000 ms. timeout advance 1000 ms ### t=13500 ### in BACKOFF for 1000 ms (1000 ms backoff) last connected 7000 ms ago, connected 6000 ms total run should connect ]) ###################################################################### RECONNECT_CHECK([connection attempt fails quickly], [enable # Connection fails quickly. run connect-failed ECONNREFUSED # Back off for 1000 ms. run timeout # Connection fails quickly again. run connect-failed ECONNREFUSED # Back off for 2000 ms. run timeout ], [### t=1000 ### enable in BACKOFF for 0 ms (0 ms backoff) # Connection fails quickly. run should connect connect-failed ECONNREFUSED in BACKOFF for 0 ms (1000 ms backoff) 0 successful connections out of 1 attempts, seqno 0 # Back off for 1000 ms. run timeout advance 1000 ms ### t=2000 ### in BACKOFF for 1000 ms (1000 ms backoff) # Connection fails quickly again. run should connect connect-failed ECONNREFUSED in BACKOFF for 0 ms (2000 ms backoff) 0 successful connections out of 2 attempts, seqno 0 # Back off for 2000 ms. run timeout advance 2000 ms ### t=4000 ### in BACKOFF for 2000 ms (2000 ms backoff) ]) ###################################################################### RECONNECT_CHECK([max-tries of 1 honored], [set-max-tries 1 enable # Connection succeeds. run connected # Send inactivity probe. timeout run # Idle timeout kills connection. timeout run disconnected ], [### t=1000 ### set-max-tries 1 1 tries left enable in BACKOFF for 0 ms (0 ms backoff) 0 tries left # Connection succeeds. run should connect connected in ACTIVE for 0 ms (0 ms backoff) created 1000, last activity 1000, last connected 1000 1 successful connections out of 1 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total # Send inactivity probe. timeout advance 5000 ms ### t=6000 ### in ACTIVE for 5000 ms (0 ms backoff) run should send probe in IDLE for 0 ms (0 ms backoff) # Idle timeout kills connection. timeout advance 5000 ms ### t=11000 ### in IDLE for 5000 ms (0 ms backoff) run should disconnect disconnected in VOID for 0 ms (1000 ms backoff) 1 successful connections out of 1 attempts, seqno 2 disconnected disconnected at 11000 ms (0 ms ago) ]) ###################################################################### RECONNECT_CHECK([max-tries of 0 honored], [set-max-tries 0 enable run timeout ], [### t=1000 ### set-max-tries 0 0 tries left enable run timeout no timeout ]) ###################################################################### RECONNECT_CHECK([passive mode], [passive enable # Start listening. timeout run listening # Listening never times out. timeout run # Listening failed (accept() returned funny error?). Back off and try again. listen-error 0 timeout run listening # Connection accepted. connected activity advance 1000 activity # Connection times out. timeout run timeout run disconnected # Start listening again. timeout run listening ], [### t=1000 ### passive enable in BACKOFF for 0 ms (0 ms backoff) # Start listening. timeout advance 0 ms run should connect listening in LISTENING for 0 ms (0 ms backoff) # Listening never times out. timeout no timeout run # Listening failed (accept() returned funny error?). Back off and try again. listen-error 0 in BACKOFF for 0 ms (1000 ms backoff) timeout advance 1000 ms ### t=2000 ### in BACKOFF for 1000 ms (1000 ms backoff) run should connect listening in LISTENING for 0 ms (1000 ms backoff) # Connection accepted. connected in ACTIVE for 0 ms (1000 ms backoff) created 1000, last activity 1000, last connected 2000 1 successful connections out of 1 attempts, seqno 1 connected last connected 0 ms ago, connected 0 ms total activity created 1000, last activity 2000, last connected 2000 advance 1000 ### t=3000 ### in ACTIVE for 1000 ms (1000 ms backoff) activity created 1000, last activity 3000, last connected 2000 # Connection times out. timeout advance 5000 ms ### t=8000 ### in ACTIVE for 6000 ms (1000 ms backoff) run should send probe in IDLE for 0 ms (1000 ms backoff) timeout advance 5000 ms ### t=13000 ### in IDLE for 5000 ms (1000 ms backoff) run should disconnect disconnected in BACKOFF for 0 ms (0 ms backoff) 1 successful connections out of 1 attempts, seqno 2 disconnected disconnected at 13000 ms (0 ms ago) # Start listening again. timeout advance 0 ms run should connect listening in LISTENING for 0 ms (0 ms backoff) ])